feat: add AI email extraction with Cloudflare Workers AI

Add AI-powered email content extraction feature using Cloudflare Workers AI to automatically identify and extract important information from emails including verification codes, authentication links, service links, and subscription links.

Features:
- AI extraction with priority-based logic (auth_code > auth_link > service_link > subscription_link > other_link)
- Admin allowlist configuration with wildcard support (*@example.com)
- Frontend display in both email list (compact) and detail view (full mode)
- Bilingual documentation (Chinese/English)
- Database migration: add metadata field to raw_mails (v0.0.3 -> v0.0.4)

Technical highlights:
- Proper regex escaping for wildcard pattern matching
- Content truncation to avoid AI token limits
- Error handling that won't affect email receiving
- JSON schema validation for AI responses
- Type-safe TypeScript implementation
- Vue I18n support with special character escaping

References:
- Inspired by Alle Project: https://github.com/bestruirui/Alle
- Uses Cloudflare Workers AI JSON Mode

🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>

frontend/package.json

@@ -29,12 +29,12 @@
     "axios": "^1.13.2",
     "jszip": "^3.10.1",
     "mail-parser-wasm": "^0.2.1",
-    "naive-ui": "^2.43.1",
-    "postal-mime": "^2.6.0",
+    "naive-ui": "^2.43.2",
+    "postal-mime": "^2.6.1",
     "vooks": "^0.2.12",
-    "vue": "^3.5.24",
+    "vue": "^3.5.25",
     "vue-clipboard3": "^2.0.0",
-    "vue-i18n": "^11.1.12",
+    "vue-i18n": "^11.2.2",
     "vue-router": "^4.6.3"
   },
   "devDependencies": {
@@ -44,12 +44,12 @@
     "unplugin-auto-import": "^19.3.0",
     "unplugin-vue-components": "^28.8.0",
     "vite": "^6.4.1",
-    "vite-plugin-pwa": "^1.1.0",
+    "vite-plugin-pwa": "^1.2.0",
     "vite-plugin-top-level-await": "^1.6.0",
     "vite-plugin-wasm": "^3.5.0",
-    "workbox-build": "^7.3.0",
-    "workbox-window": "^7.3.0",
-    "wrangler": "^4.47.0"
+    "workbox-build": "^7.4.0",
+    "workbox-window": "^7.4.0",
+    "wrangler": "^4.53.0"
   },
   "packageManager": "pnpm@10.10.0+sha512.d615db246fe70f25dcfea6d8d73dee782ce23e2245e3c4f6f888249fb568149318637dca73c2c5c8ef2a4ca0d5657fb9567188bfab47f566d1ee6ce987815c39"
 }